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Guest post by Andrew Glikson (Andrew is an Earth and paleo-climate scientist, Australian National University who has contributed regularly to Brave New Climate). The state of the terrestrial atmosphere over the last ~10,000 years (Holocene), when conditions became amenable for agriculture and civilization, and over the preceding ~5 million years (Pliocene-Pleistocene) when prehistoric humans evolved, was constrained by a CO2 range […]
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